Simple

This sample demonstrates how you might work with an ArcGISImageServiceLayer using Extensible Application Markup Language (XAML). An ArcGISImageServiceLayer is displayed on top of an ArcGISTiledMapServiceLayer. An image service is optimized for delivering raw or finished imagery that can be RGB, panchromatic, multispectral, or elevation data stored in a geodatabase or file system. Data sources for Image Services can be raster datasets, in formats such as TIFF, MrSID, IMAGINE (IMG), or JPEG2000, as well as raster mosaics.

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XAML C# VB.NET
<UserControl x:Class="ArcGISWPFSDK.SimpleImageService"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:esri="http://schemas.esri.com/arcgis/client/2009">
    <Grid x:Name="LayoutRoot" Background="White">
        <esri:Map x:Name="MyMap" Extent="-13486609,5713307,-13263258,5823117">
            <esri:ArcGISTiledMapServiceLayer Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer" />
            <esri:ArcGISImageServiceLayer Url="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Portland/CascadeLandsat/ImageServer" 
                                          ImageFormat="PNG8"
                                          NoData="0"/>
        </esri:Map>
    </Grid>
</UserControl>

Sample code usage restrictions
5/16/2014